Thousands of years ago, the world was covered in war. After the baptism of blood, four powerful countries emerged. They are: the Demon Realm that advocates extreme magic, the powerful and aggressive Fighting Realm, the Holy Realm that pursues sacred beliefs and will, and the God Realm that is independent of the world and is the most mysterious. After countless wars, countries no longer have any attachment to power. They signed peace terms, each guarding the border and not fighting. However, in recent years, an unknown person has caused great damage to various countries and regions, causing countless casualties. He was codenamed [Reaper] by the Four Nations Alliance. Under various suspicions, relations among the four countries have gradually deteriorated. In order to maintain the peace of the four countries, each country sent countless warriors to intercept and kill this [God of Death]. However, nothing ever came of it. No one thought that this tragedy of fate was actually the conspiracy of the God of Creation. Trapped by fate, the flower of madness, greedily sucking blood, finally bloomed slowly, exuding the most alluring fragrance and swallowing the whole world...